Some ten billion years ago, the Milky Way merged with a large galaxy. The stars from this partner, named Gaia-Enceladus, make up most of the Milky Way's halo and also shaped its thick disk, giving it its inflated form.

Mars' organic carbon may have originated from a series of electrochemical reactions between briny liquids and volcanic minerals, according to new analyses.

After nine years in deep space collecting data that indicate our sky to be filled with billions of hidden planets – more planets even than stars – NASA’s Kepler space telescope has run out of fuel needed for further science operations.

Parker Solar Probe now holds the record for closest approach to the Sun by a human-made object.

NASA has a new mission to Mars, and it's taking podcast listeners along for the ride.

Astronomers have witnessed, in the finest detail ever, the slow death of a neighbouring dwarf galaxy, which is gradually losing its power to form stars.

Two outback radio telescopes synchronised to observe the same point of sky have discovered more about one of the Universe's most mysterious events in new published research.

If you’re standing in the Southern Hemisphere on a clear night, you can see two luminous clouds offset from the Milky Way.

A team of Hungarian astronomers and physicists may have confirmed two elusive clouds of dust, in semi-stable points just 400,000 kilometres from Earth.

After touching down in November, NASA's InSight spacecraft will spread its solar panels, unfold a robotic arm … and stay put. Unlike the space agency's rovers, InSight is a lander designed to study an entire planet from just one spot.